Elemental Intrinsic Function (Generic): Produces the arctangent of x.
result = ATAN (x)
|
x |
(Input) Must be of type real. |
The result type is the same as x and is expressed in radians. The value lies in the range -pi/2 to pi/2.
|
Specific Name |
Argument Type |
Result Type |
|---|---|---|
|
ATAN |
REAL(4) |
REAL(4) |
|
DATAN |
REAL(8) |
REAL(8) |
|
QATAN |
REAL(16) |
REAL(16) |
ATAN (1.5874993) has the value 1.008666.